PDA

View Full Version : 8 minutes for light to reach us from the SUN


Christmas Dynasnow
21-06-2021, 01:51 PM
so if a God covered it with a big screen we would not notice for 8 mins after

Light takes 2 hours 50 mins to get to us from Uranus

The light travel time between Melbourne and London is only 0.05 seconds

The nearest large galaxy to the Milky Way is the Andromeda Galaxy. it ies about 2 1/2 million light years from Earth. The light we see from it tonight left it more than 2 million years ago.


GN-z11 is a high-redshift galaxy found in the constellation Ursa Major. light from this galaxy takes 13.4 BILLION years to get to us :shocked:

https://res-2.cloudinary.com/the-university-of-melbourne/image/upload/s--J1uryVA---/c_limit,f_auto,q_75,w_892/v1/pursuit-uploads/6c0/4f2/467/6c04f246707e1cc5e3b32b60b0f5476f3cadd2fe5b5299bc3b 48b03e5bb0.jpg

Having a galaxy with a billion stars present just 400 million years after the Big Bang is astonishing.

So we are actually seeing this galaxy as it was 400 million years after the big bang. To see how it looks now we would have to wait 13.4 billion years.

https://pursuit.unimelb.edu.au/articles/a-galaxy-very-far-far-away

bots
21-06-2021, 02:06 PM
it always messed with my brain looking at stars in the sky thinking the light we see from them is so old

Zizu
21-06-2021, 03:44 PM
I usually think of that funny quip about the guy complaining about his vision and the optician says “ what’s that up there “

The guy looks up and says
“ The sun ?”

To which the optician says
“How far do you want to flaming well want to see ?”


Sent from my iPhone using Tapatalk Pro

Zizu
21-06-2021, 03:46 PM
it always messed with my brain looking at stars in the sky thinking the light we see from them is so old


Yeah and when some planets / asteroids we can see don’t actually exist anymore !!


Sent from my iPhone using Tapatalk Pro

UserSince2005
21-06-2021, 05:16 PM
They also say the world is round.

Christmas Dynasnow
21-06-2021, 05:34 PM
They also say the world is round.

It is actually closer to an ellipsoid. :hee:

Zizu
21-06-2021, 06:06 PM
They also say the world is round.


https://uploads.tapatalk-cdn.com/20210621/e3518092cb8a6ccef5ed3264216cfc4c.jpg


Sent from my iPhone using Tapatalk Pro

Christmas Dynasnow
21-06-2021, 06:11 PM
https://uploads.tapatalk-cdn.com/20210621/e3518092cb8a6ccef5ed3264216cfc4c.jpg


Sent from my iPhone using Tapatalk Pro

:laugh2:

brilliant

Parmy
21-06-2021, 06:36 PM
:smug:

Livia
22-06-2021, 08:44 AM
https://uploads.tapatalk-cdn.com/20210621/e3518092cb8a6ccef5ed3264216cfc4c.jpg


Sent from my iPhone using Tapatalk Pro

LMAOOOOOOOOOOOOOOOooooooooooooooooooooooooooooo

user104658
22-06-2021, 10:22 AM
https://res-2.cloudinary.com/the-university-of-melbourne/image/upload/s--J1uryVA---/c_limit,f_auto,q_75,w_892/v1/pursuit-uploads/6c0/4f2/467/6c04f246707e1cc5e3b32b60b0f5476f3cadd2fe5b5299bc3b 48b03e5bb0.jpg


So we are actually seeing this galaxy as it was 400 million years after the big bang. To see how it looks now we would have to wait 13.4 billion years.

So I actually waited 13.4 billion years and checked, what the **** is this ****? Care to explain??

https://i.imgur.com/BB9898v.png

Nicky91
23-06-2021, 08:21 AM
https://uploads.tapatalk-cdn.com/20210621/e3518092cb8a6ccef5ed3264216cfc4c.jpg


Sent from my iPhone using Tapatalk Pro

:laugh3: :laugh3: